Rich people just love Fascism and here's an ethno-Fascist nation for some of them, claiming that their ethnicity makes them superior to everybody else, so of course they'll tend to support them.
It's not at all surprising that the moneyed elites amongst the Jewish People would side with a regime that says they're inherently superior, same as the German elites sided with the Nazis. I mean, back in early Nazi times even the British moneyed elites were very drawn to Nazism and its ideas of racial superiority (there's even a photo of young princess Elizabeth being taught by her uncle - the then King - how to do a Nazi salute) up until the point Germany actually invaded Poland.
You see the very wealthy supporting supremacists of their ethnicity all throughout History, no "conspiracy" necessary.
Historically, quite independently of ethnicity you'll find it's the well educated middle classes that most resist the pull of chauvinism, and that seems to be exactly what we're seeing amongst the Jewish People now that the self-proclaimed representative of them all as full revealed itself as a Genocidal project.
Only a rabid racist would - through claiming that anything critical said about that nation is anti-semitism - imply that a nation station state whose actions approach those of the Nazis in their depravity represents all the Jewish People.
It's hard to be more anti-semite than conflation a nation mass murdering children with the Jewish People as a whole.